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<div><div class="header">
  <div class="headertitle"><div class="title">Revision History </div></div>
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<div class="contents">
<div class="textblock"><p><a class="anchor" id="md_src_history"></a> CMSIS-RTOS2 API component is maintained with its own versioning that gets offically updated upon releases of the <a href="../General/cmsis_pack.html">CMSIS Software Pack</a> releases.</p>
<p>The table below provides information about the changes delivered with specific versions of CMSIS-RTOS2 API.</p>
<table class="cmtable" summary="Revision History">
<tr>
<th>Version </th><th>Description  </th></tr>
<tr>
<td>V2.3.0 </td><td>Changed:<ul>
<li>OS Tick API moved from Device to CMSIS class Added:</li>
<li>Provisional support for processor affinity in SMP systems:<ul>
<li><a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#structosThreadAttr__t">osThreadAttr_t</a> :: affinity_mask</li>
<li><a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga60e2518df0194587a134b7e1836f2470">osThreadSetAffinityMask</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gab0541a97b969f7f762572dcefe2f65e1">osThreadGetAffinityMask</a>   </li>
</ul>
</li>
</ul>
</td></tr>
<tr>
<td>V2.2.0 </td><td>Added:<ul>
<li>support for <a class="el" href="CMSIS_RTOS_ProcessIsolation.html">Process Isolation</a> :<ul>
<li>Kernel Management: <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#gac7e3b012c15c55bda68e0dd96ad9cd72">osKernelProtect</a>, <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga2065364d1bc805a40e749430377df1e1">osKernelDestroyClass</a></li>
<li>Thread Management: <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga1bfbef7da94ed4147d231e8d6eeb5f3e">osThreadGetClass</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga4101737fa4fd303d4b41fdca6b994f8e">osThreadGetZone</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gadadb56627094dbb07f6aeddf7d713fd9">osThreadSuspendClass</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gadd0a06b459925eb5cdeab67b380a3970">osThreadResumeClass</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga99ce311cc620c65fbac043d04dc7d755">osThreadTerminateZone</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga8f4455b06afb95c1915f15266818a8c6">osThreadFeedWatchdog</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gaee8e6bed82cd58dad31bb90156182032">osThreadProtectPrivileged</a></li>
<li>Thread attributes: <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gaefca370070d0b1616421bc3311acfecc">osThreadZone</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga4c028e5c3f4d86d237a1e09ceaf84792">osThreadUnprivileged</a>, <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga7c2b7db42d23e4f56132e0ed739d02e5">osThreadPrivileged</a></li>
<li>Object attributes: <a class="el" href="group__CMSIS__RTOS__Definitions.html#ga604fce4f5205f92c347eb62fcc216861">osSafetyClass</a></li>
<li>Handler functions: <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga5a02770aaf65c7a3c7562c109884176a">osWatchdogAlarm_Handler</a></li>
<li>Zone Management: <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga79d4b26de0bfcdaf142f83e585532f93">osZoneSetup_Callback</a></li>
<li>Exception Faults: <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga91b400b21a9093f7751fc45613c12110">osFaultResume</a></li>
</ul>
</li>
<li>Additional functions allowed to be called from Interrupt Service Routines:<ul>
<li><a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gac3230f3a55a297514b013ebf38f27e0a">osThreadGetName</a>, <a class="el" href="group__CMSIS__RTOS__EventFlags.html#ga59f4ddf0ee8c395b1672bb978d1cfc88">osEventFlagsGetName</a>, <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7938dde88ada1a01b60f41cf120069c0">osTimerGetName</a>, <a class="el" href="group__CMSIS__RTOS__MutexMgmt.html#ga00b5e58cd247a412d1afd18732d8b752">osMutexGetName</a>, <a class="el" href="group__CMSIS__RTOS__SemaphoreMgmt.html#ga9586952051f00285f1482dbe6695bbc4">osSemaphoreGetName</a>, <a class="el" href="group__CMSIS__RTOS__PoolMgmt.html#gab414a1e138205a55820acfa277c8f386">osMemoryPoolGetName</a>, <a class="el" href="group__CMSIS__RTOS__Message.html#gae7cf7bf2b97a5ae481fb60fcce99247a">osMessageQueueGetName</a>   </li>
</ul>
</li>
</ul>
</td></tr>
<tr>
<td>V2.1.3 </td><td>Added:<ul>
<li>Additional functions allowed to be called from Interrupt Service Routines:<ul>
<li><a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#ga8df03548e89fbc56402a5cd584a505da">osThreadGetId</a>   </li>
</ul>
</li>
</ul>
</td></tr>
<tr>
<td>V2.1.2 </td><td>Added:<ul>
<li>Additional functions allowed to be called from Interrupt Service Routines:<ul>
<li><a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga6f7764e7250c5c5364c00c45a5d1d199">osKernelGetInfo</a>, <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga48b69b81012fce051f639be288b243ba">osKernelGetState</a>   </li>
</ul>
</li>
</ul>
</td></tr>
<tr>
<td>V2.1.1 </td><td><p class="starttd">Additional functions allowed to be called from Interrupt Service Routines:</p><ul>
<li><a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga84bcdbf2fb76b10c8df4e439f0c7e11b">osKernelGetTickCount</a>, <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga7a8d7bd927eaaa58999f91d7d6310cee">osKernelGetTickFreq</a></li>
</ul>
<p class="endtd">Changed Kernel Tick type to uint32_t:</p><ul>
<li>updated: <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga84bcdbf2fb76b10c8df4e439f0c7e11b">osKernelGetTickCount</a>, <a class="el" href="group__CMSIS__RTOS__Wait.html#ga3c807924c2d6d43bc2ffb49da3f7f3a1">osDelayUntil</a>   </li>
</ul>
</td></tr>
<tr>
<td>V2.1.0 </td><td><p class="starttd">Support for critical and uncritical sections (nesting safe):</p><ul>
<li>updated: <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga948609ee930d9b38336b9e1c2a4dfe12">osKernelLock</a>, <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#gaf401728b4657456198c33fe75f8d6720">osKernelUnlock</a></li>
<li>added: <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#gae7d0a71b9586cbbb49fcbdf6a04f0289">osKernelRestoreLock</a></li>
</ul>
<p class="endtd">Updated <a class="el" href="group__CMSIS__RTOS__ThreadFlagsMgmt.html">Thread Flags</a> and <a class="el" href="group__CMSIS__RTOS__EventFlags.html">Event Flags</a>:</p><ul>
<li>changed flags parameter and return type from int32_t to uint32_t   </li>
</ul>
</td></tr>
<tr>
<td>V2.0.0 </td><td>New API Version 2.0 available.<ul>
<li>See <a class="el" href="group__CMSIS__RTOS.html">CMSIS-RTOS2 API</a> for a detailed function reference.   </li>
</ul>
</td></tr>
<tr>
<td>V1.02 - only documentation changes </td><td><p class="starttd">Added:</p><ul>
<li>Overview of the <a class="el" href="rtosValidation.html">CMSIS-RTOS Validation</a> Software Pack.</li>
</ul>
<p class="endtd">Clarified:</p><ul>
<li>Behavior of <a class="el" href="usingOS2.html#CMSIS_RTOS_TimeOutValue">Timeout Values</a>.   </li>
</ul>
</td></tr>
<tr>
<td>V1.02 </td><td><p class="starttd">Added:</p><ul>
<li>New control functions for short timeouts in microsecond resolution <b>osKernelSysTick</b>, <b>osKernelSysTickFrequency</b>, <b>osKernelSysTickMicroSec</b>.</li>
</ul>
<p class="endtd">Removed:</p><ul>
<li>osSignalGet.   </li>
</ul>
</td></tr>
<tr>
<td>V1.01 </td><td>Added:<ul>
<li>capabilities for C++, kernel initialization and object deletion.</li>
<li>Prepared for C++ class interface. In this context to <em>const</em> attribute has been moved from osXxxxDef_t typedefs to the osXxxxDef macros.</li>
<li><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad0001dd74721ab461789324806db2453">osTimerDelete</a>, <a class="el" href="group__CMSIS__RTOS__MutexMgmt.html#gabee73ad227ba4587d3db12ef9bd582bc">osMutexDelete</a>, <a class="el" href="group__CMSIS__RTOS__SemaphoreMgmt.html#ga81258ce9c67fa89f07cc49d2e136cd88">osSemaphoreDelete</a> .</li>
<li><a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#gae818f6611d25ba3140bede410a52d659">osKernelInitialize</a> that prepares the kernel for object creation.   </li>
</ul>
</td></tr>
<tr>
<td>V1.00 </td><td><p class="starttd">First official Release.<br  />
 Added:</p><ul>
<li><a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga9ae2cc00f0d89d7b6a307bba942b5221">osKernelStart</a>; starting 'main' as a thread is now an optional feature.</li>
<li>Semaphores have now the standard behavior.</li>
<li>osTimerCreate does no longer start the timer.</li>
<li><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (replaces osTimerRestart).</li>
</ul>
<p class="endtd">Changed:</p><ul>
<li>osThreadPass is renamed to <a class="el" href="group__CMSIS__RTOS__ThreadMgmt.html#gad01c7ec26535b1de6b018bb9466720e2">osThreadYield</a>.   </li>
</ul>
</td></tr>
<tr>
<td>V0.02 </td><td>Preview Release.  </td></tr>
</table>
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